Brush-trimming machine



(No Model.)

T. GOLDWELL.

BRUSH TRIMMING MACHINE.

No, 359i847.

Patented Mar. 22, 1887.

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(No Model.) I 4 sheets-sheet 2.

T. GOLDWELL.

BRUSH TRIMMING MACHINE.

Patented Mar. 22,1887.

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BRUSH TRIMMING MACHINE.

(No Model.)

No. 359,847. Patented Mar. 22, 1887.

NITED STATES PATENT trice,

THOMAS OOLDVELL, OF NEVVBURG, NEV YORK.

BRUSH-TRiMMING MACHINEx SPECIFICATION forming part of Letters Patent No. 359,847, dated March 22, 1887.

Application filed May 8, 1885. Serial No. 164,822. (No model.)

To ZZ whom it 71mg/ concern:

Be it known that I, THOMAS CoLDwnLL, of Newburg, in the county of Orange, and in the State of New York, have invented certain new and useful Improvements in Brush-Trimming Machines; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which- Figure l shows a perspective view of my machine; Fig.2, a view in side elevation of the same on the side opposite to that shown in Fig. l, showing a brush as being out; Fig. 3, a detail sectional view showing the action of the shield in connection with the cutters while a brush :is being trimmed; Fig. 4, a de tail perspective view of the guiding and supporting holder for brushes with long bristles; and Fig. 5, a plan view of my machine, showing the holder' in use.

Letters of like name and kind refer to like part-s in each of the iigures.

The object of my invention is to provide an improvement in brush-trimming machines; and to this end my invention consists in the machine and the construction, arrangement, and combination of parts, as hereinafter speci fied.

In the drawings I have shown myinvention as applied to the form of brush-trimming machine shown and described in my United States Patent No. 294,583, March 1, 1881i. In such pat-ent the frame of the machine, the fixed and revolving cutters, and the means for adjusting the guides for supporting and guiding the brush being trimmed, either toward or from each other or vertically, have been so clearly set forth and described as not to need special description here. For information concerning these various parts of the machine I would refer to the said patent.

'The parallel guide-bars A A serve merely to guide and support the back of the brush being trimmed at the desired height above the cutters. W'here wire brushes or coarse and stiff brushes are to be trimmed, however, it is found not sufficient merely to support the brush back and guide it longitudinally, but there must be some means for holding the brush down in place, so that the trimming can be done evenly, and also for feeding the brush through the machine with some power.

In the case of wire brushes or coarse .and stiff brushes of various materials it has been found that the revolving cutter beneath the brush bearing up against the wires or bristles tends to throw or force the brush upward. To hold the brush down in place positively, I have provided the upper guidevbars, B B, parallel to bars A A, and supported from and above such bars by means of the tubular posts ordistance pieces C C. These upright distancepieces, ot' which there can be any desired number, are situated between the correspondin g upper and lower guide-bars, near the outer sides of the bars, so as to leave bearing-space for the brnshback against the upperandlou-'er bars. Screw rods or bolts D D pass up through the lower guidebars and the distance-pieces C C, and are tapped at their upper ends into the upper bars, as shown in the drawings. The space between each upper and lower bar is to be sufficient to just admit the side portion of the brush-back, so that thebrush as it is slid along can have no vertical play.

The upper bars, B B, are made shorter than the lower ones, so that one end oi' the brush can be quickly placed in position between and supported npon the projecting lower bars, and the brush can then be slid forward with the sides of its back passing under the upper guide-bars. lVith the upper and lower bars ofthe same length, some care and time would be necessary to properly insert the brush-back between the guide-bars.

The bars B B, being rigidly supported upon and connected with bars A A, are adjusted with them by the adjusting devices described in my patent referred to.

Upon one of the bars B B is screwed, as shown, the bottom plate, E, ot' the upright standard F, provided at its upper end with the vertical slot F'. Through such slot passes one end of stud G, which is formed with the collar or enlargement G bearing against the inner side of the standard F. Upon the outer end of the stud is screwed the nut H, and between such nut and the outer side of the standard is the washer H. tion of the stud G, over the way between the brush-guides below, is pivoted at its angle the right-angled lever I, having, as shown, a pin, K, to keep the lever in place on the stud. To the downwardlyextending arm I of this lever Upon the inner por-V IOC is pivoted one end of the link L, which at its other end is formed on its under side with the pawl-like projection L', having its abrupt side Z facing toward the inner or pivoted end ofthe link. The outer end of the link is cut at an angle to form a continuation of the inclined outer lside of the pawl-projection.

The link L, with its pawl, I call my pawllink. Such link is, near its pawl end, provided with a transverse pin or bar, M, adapted to rest upon the upper sides of the top guidebars, B B, so as to support the end of thelink and prevent its dropping down too low between the guides.

In operation, when a brush has been started between the guides, as described, the lever I is swung to carry the pawl-link out over the brush until its pawl-projection drops down behind the end ofthe brush-back. If, then, the lever-arm I be pulled down the pawl-link will; be moved so as to draw the brush with con-1 siderable power, and as slowly or as fast as desired through the guideway therefor and` over the cutting devices.

In brush-trimming machines as heretofore made with revolving cutters, as the brush is fed up to and over the cutters the bristles are not cut the required amount by single cuts, but only by a series of small cuts. as it comes within reach of the moving cutters has rst a small portion clipped off, then another, and so on until it comes directly over the edgeof the stationary cutter, when the last portion of the desired cut is taken off. As the bristles are thus ea'ch acted upon a num ber of times by the cutters, there is a useless waste of power. It has heretofore, because of this repeated clipping or chewing action of the cutters, been impossible to trim wire brushes by a machine driven by hand-power. To avoid such action of the cutters,and insure that each wire or bristle shall be cut off the required amount by one cut only, I provide in front of and over the revolving cutter M the shield N, preferably curved, as shown, concentricall y with the arc of travel of the cutter-edges.

This shield extends across the machine, and is fastened to the frame by means of screws a n, passing through slots an into the table or upper portion of the frame, as shown. As thus fastened, the shield is obviously capable of being adjusted nearer to or farther from the revolving cutter. The upper or outer face of the upper edge of this shield is situated in a plane above the circle of movement of the cutter-edges. Vtfith this construction, as the brush to be trimmed is moved up toward the cutters the bristles or wires of it are, as they approach the cutters,held back by the shield,

as shown in Figs. 2 and 3, until their points ofA attachment are over, or nearly over, the edge of the stationary cutter O,when the lower ends ofthe bristles or wires slide off over the edge of the shield and snap quickly forward against the edge of the stationary knife, where they are cut off the whole of the ldesired amount Each bristle bysingle cuts of the knives `of the revolving cutter. Vith ashield so arranged and acting in connection with revolving and a stationarv Y inbefore, for engaging the upper side of the brush-back at its sides and. so holding the brush down positively in place, is especially desirable for use where the shield N is used, as described, because the bristles or wires of the brush, being bent as they pass over the shield, obvious] y tend to press or force the brush upward. f

In the drawings I have shown a shieldwhich notonly acts upon the bristles or wires of the brush, as described, but also serves as a protecting-shield :for the revolving cutter.`

Instead of making theishield so extensive, it is sufeient, so far as the retardingaction upon the bristles is concerned,if only a narrow plate'or bar extends across above the cntters in position to engage the bristles, as the upper portion of the shieldis shownas doing Y in the drawings. I do not, therefore,ilimit myself to a shield soiextensive as to hide the cutter and extending down throughout its length to the level of the attaching-lange at the sides.

As the guides cannot conveniently be made vertically adjustable to any great extent with reference to the cutters, it is desirable that the machine be provided with some means for properly holding and iguiding brushes with bristles or wires of considerable lengthwith i the bristles or wires in position to be cut the desired amount by the cutters. I have therefore `provided for use in combination with the other elements of my machine a holder, R,

which consists of the two upright side boards, S and S, a sufiicient distance Vapart at their tops to secure and support upon their upper edges the sides of the back of the brush, as shown in the drawings. They preferablyslant `IIC away from each other toward the bottom a 1 little, as shown, so as to make `the space `between them` flaring downward to correspond with `the usual shape of a brush.` They are connected together only at their rear ends by the two parallel upright brace-boards'S2 S Upon the outer side of each side board, near i its lower edge andparallel thereto, is the `longitudinal guide-strip T. These two guidestri ps are adapted to fit and` slide between the upper and lower guidebars, "B B A A, at the sides of the brushway on the machine in pre-` cisely the same way as a bruslrback basal ready been described as doing.

The holder B is made of such height as to support the brush to be trimmed with its `bristles extending below its lower edge, so as to be properly cut bythe cutters `as the holder `iis moved along over them. t The ends of the bristies are engaged in the same way asbeforeiby i the shield; but as they are so long there is little tendency to lift or raise the brush. It can then be easily held down in place iu the holder by hand. This holder, as described, is oi' especial advantage in the trimming of rattan brushes for stables and other uses.

When the holder is used, the stud forming the pivot of the lever I is adjusted farther up in the slot in the standard. This can easily be done by loosening the nut H, sliding the stud upward the desired amount, and then screwing up the nut again to clamp the standard on opposite sides between the washer H' and the collar G on the stud. The holder can then be slid through the machine by hand, or the pawl-link can be caused to engage the end of the brush in the holder, or ot' the holder itself, and the lever-arm I can be depressed to draw the brush through the machine over the cutters.

Instead of slot-ting the standard,as described and shown, I contemplate making an upright series of holes in it, in either of which the pivot-stud can be placed and fastened in adjusting the pivotal point of the lever.

My device for bending back the bristles and allowing them to snap quickly into position to be cut, as described, can obviously be used whether the brush moves with reference to the cutting devices or the brush is held stationary and the cutters move along with reference to it.

Having thus described my iuvention,what I claim is l. In a brush-trimming machine, in combi nation with the cutting devices, a retainingpiece adapted to engage the ends of the wires or bristles before they reach t-he cutting devices, and then to let them snap quickly into position to be cut, substantially' as and for the purpose descri bed In a brushtrimming machine, in combination with the stationary cutter and the revolving cutter, a piece in front of the cutters adapted to engage the bristles or wires ot" a brush, substantially as and for the purpose described.

3. In a brushftrimming machine, iu combi nation with the stationary cutter, the revolving cutter and theshield having its upper edge adapted to engage the bristles or wires ot' the brush before they come withinlreach of the revolving cutter and hold and bend them back, and then allow them to snap over against the stationary cutter, substantially as and for the purpose described.

4. In a brush-trimming machine provided with a guidewa-y through which the brush is passed, the stationary cutter below the same, the rotary cutter acting in conjunction with the stationary one, and the shield having its upper edge situated above the rotary cutterblades in position to engage and retard the lower ends of the bristles or wires of the brush before they come within reach of such cutterblades, substantially as and for the purpose described.

5. In a brush-trimming machine provided with a brush-guideway adapted to guide the brush and support it as it is passed along the stationary cutter, the rotary cutter in front of the same and acting therewith, and the curved shield in front of the rotary cutter adapted to engage with its upper edge and retard the lower ends of the bristles or wires of the brush before they are acted upon by the rotary cutter-knives, substantially as and for the pur pose described.

6. In combination with the two lower guidebars, the two corresponding upper guide-bars, the tubular posts or distance-pieces between the upper and lower bars at each side, and the screw-bolts passing up through the lower bars and posts or distance-pieces and tapped into the upper bars, substantially as and for the purpose described..

7. In a brush-trimming machine, in combination with the guideway for the brush, a pivoted lever anda link with a projection adapted to engage the brush end, substantially as and for the purpose described.

8. In a brush-trimming machine, in combination with the upper and lower guidebars for engaging and guiding the opposite sides ot' the brush-back, a pivoted lever, a link having its outer end made pawl-shaped, and the pin or bar on the link resting upon the upper guide-bars, substantially as and for the purpose described.

9. In combination with the upper audlower guide-bars of the bruslrguideway, a standard fastened to one of the upper guide-bars provided with a vertical slot, a stud extending through such slot and over the guideway, means, substantially as described, for fastening the stud at any desired point of adjustment along such slot, the angle-lever pivoted upon the stud,aud the pawldink pivoted to an arm of the lever, substantially as and for the purpose described.

l0. The brush-holder adapted to receive a brush and support the sides of the brush-back upon its upper edges, provided with longitudinal ribs on its sides adapted to t and slide in the brush-guides of a brushtrinnning machine, substanlially as and for the purpose described.

ll. The bruslrholder consisting of the upright boards attached together at one end by means of one or more transverse brace-boards, and provided on their outer sides with longitudinal ribs adapted to tit and slide in the brush-guides of a trimming-machine, substantially as and for the purpose described.

In testimony that l claim the foregoing I have hereunto set my hand this lth day of April, A. l). 1885.

THOMAS coLnwnLL.

Nitnesscsz A. E; MaNcr-insfrnn, E. I. Conwnv.

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